The line that people tend to quote there is “מנהג ישראל דין הוא” (the custom of Israel is law), but most people have never looked up its formal definition. Its actual halachic bearing is much too narrow to justify (for example) making kids sing Shabbat meal songs.
I thought there was a rule about not breaking tradition, even if the tradition isn’t otherwise supported. No?
The line that people tend to quote there is “מנהג ישראל דין הוא” (the custom of Israel is law), but most people have never looked up its formal definition. Its actual halachic bearing is much too narrow to justify (for example) making kids sing Shabbat meal songs.